public class CronSequenceGenerator extends Object
The pattern is a list of six single space-separated fields: representing second, minute, hour, day, month, weekday. Month and weekday names can be given as the first three letters of the English names.
Example patterns:
CronTrigger
Constructor and Description |
---|
CronSequenceGenerator(String expression)
Construct a
CronSequenceGenerator from the pattern provided,
using the default TimeZone . |
CronSequenceGenerator(String expression,
TimeZone timeZone)
Construct a
CronSequenceGenerator from the pattern provided,
using the specified TimeZone . |
Modifier and Type | Method and Description |
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boolean |
equals(Object other) |
int |
hashCode() |
static boolean |
isValidExpression(String expression)
Determine whether the specified expression represents a valid cron pattern.
|
Date |
next(Date date)
Get the next
Date in the sequence matching the Cron pattern and
after the value provided. |
String |
toString() |
public CronSequenceGenerator(String expression)
CronSequenceGenerator
from the pattern provided,
using the default TimeZone
.expression
- a space-separated list of time fieldsIllegalArgumentException
- if the pattern cannot be parsedTimeZone.getDefault()
public CronSequenceGenerator(String expression, TimeZone timeZone)
CronSequenceGenerator
from the pattern provided,
using the specified TimeZone
.expression
- a space-separated list of time fieldstimeZone
- the TimeZone to use for generated trigger timesIllegalArgumentException
- if the pattern cannot be parsedpublic Date next(Date date)
Date
in the sequence matching the Cron pattern and
after the value provided. The return value will have a whole number of
seconds, and will be after the input value.date
- a seed valuepublic static boolean isValidExpression(@Nullable String expression)
expression
- the expression to evaluatetrue
if the given expression is a valid cron expression